*HP calculation based on the average results of a QualityLogic 2010 study comparing Original HP LaserJet Print Cartridges with seven brands of non-HP toner cartridges sold in North America for the HP LaserJet P1505 and P4015 printers, HP 36A and 64A. For details, see qualitylogic.com/NAmonotonertest.pdf
. Calculation includes paper, cartridge replacement and labor for reprints. Assumes equal number of pages for external, internal and individual use. Labor rate from Mercer 2009 Global Pay Study. Assumes purchase price for HP cartridge is $170 and 30% lower purchase price for a non-HP toner cartridge. Actual prices, costs and savings may vary.